computational fluid dynamics: · pdf filecomputational fluid dynamics: preprocessing! april...
TRANSCRIPT
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Otto-von-Guericke-Univ. Magdeburg!
Computational Fluid Dynamics: Preprocessing!
April 16, 2012!
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Introduction! GAMBIT is an integrated preprocessor program for CFD!
geometry construction and import! mesh generation with structured and unstructured elements!
mesh quality examination! definition of boundary zones!
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File structure! GAMBIT is an integrated preprocessor program for CFD!
project.dbs is a database with all information! project.jou is a text file with all commands! project.trn is a text file with all output from Gambit!
Temporary directory GAMBIT.# with the following files:! project.dbs, jou und trn!
project.lok in your working directory. It prevents any user from starting up another session using the same identifier in the same directory.!
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Gambit - GUI!
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„Transcript“ window!
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„Transcript“ window!
Transcript window can be expanded using arrow button in top right corner.
Output from GAMBIT is printed here as well as in project.trn!
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„Description“ window!
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„Description“ window!
It gives a short description of all global function buttons and screen areas.
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Menu structure!
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Menu structure!File! Edit! Solver!
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Import geometry!
in Menu File!
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Operation!
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Operation!
Geometry!
Mesh! Boundary conditions!
other Tools!
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Creating geometry!Vertex!(point)!
Edge!(curve)!
Face!(surface)!
Volume!
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Creating edge!Edge!
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Creating face!
Face!
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Creating volume!
Volume!
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Boolean operations!
Face! Volume!
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General operations: Move/Copy!Vertex! Edge!
Face! Volume!
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General operations: Move/Copy!
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Vertex! Edge!
Face! Volume!
General operations: Delete!
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Edge meshing!
Edge mesh!
Possibilities!
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Edge meshing!Temporary meshed edges !are white!
Single-sided grading!
Symmetric grading!
Asymmetric grading!
When you Apply, the!mesh nodes will turn blue!
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Face meshing!
Face mesh!
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Face meshing!
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Face meshing!
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Volume mesh!
Volume meshing!
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Volume meshing!
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Volume meshing!
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Boundary conditions!
Definition of the !Boundary conditions!
Possibilities!
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Definition of the Fluid zone!
Definition of the !Volume!
Possibilities!
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Global Control!
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Global Control!
Check mesh !quality!
Scale-to-Fit!
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Examining the mesh!
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Examining the mesh!
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Examining the mesh!
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Export mesh!Menu File!
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Mouse operations!
Mouse! Movement! Description!Left mouse! All direction! Rotation!Middle mouse! All direction! Translation!Right mouse! Horizontal! Rotation (z-direction)!Right mouse! Vertical! Zoom!Ctrl- Left mouse! Diagonal! Drag zoom!Shift- Left mouse! Pick an object!Shift- Middle mouse!
Next / Change direction!
Shift- Right mouse! Accept / Next Picker!
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End!
April 16, 2012!